C2CAM: Off the Air

Then there's the possibility of a Carrington Event.

A what?

A Carrington Event. A massive solar storm that hits the earth with an EMP effect knocking out everything electrical.

It would be a bit like SM Stirling's Emberverse novels, or that rip off Revolution TV show. We would be reduced to 19th Century technology overnight. But firearms would still work, so less swashbuckling.